Xenasmatella, Liu & Yuan, 2022

Liu, Zhan-Bo & Yuan, Yuan, 2022, A new species of Xenasmatella (Polyporales, Basidiomycota) from southern China, Phytotaxa 556 (2), pp. 185-192 : 190

Key to the nine species of Xenasmatella known from China. The new species is in bold.

1. Tissues turning dark red or purplish in KOH .......................................................................................................................... X. vaga

1. Tissues unchanged in KOH. ...............................................................................................................................................................2

2. Rhizomorphs present ................................................................................................................................................... X. rhizomorpha

2. Rhizomorphs absent ...........................................................................................................................................................................3

3. Basidia often bifurcate at base.......................................................................................................................................... X. insperata

3. Basidia not bifurcate at base...............................................................................................................................................................4

4. Basidiomata less than 100 μm thick ..................................................................................................................................................5

4. Basidiomata more than 100 μm thick.................................................................................................................................................6

5. Basidiospores 3.3–4 μm wide; crystals present among hyphae .............................................................................. X. roseobubalina

5. Basidiospores 2.3–3.4 μm wide; crystals absent .................................................................................................................... X. tenuis

6. Generative hyphae slightly thick-walled ..................................................................................................................... X. xinpingensis

6. Generative hyphae thin-walled...........................................................................................................................................................7

7. Generative hyphae unbranched ........................................................................................................................... X. wuliangshanensis

7. Generative hyphae branched ..............................................................................................................................................................8

8. Generative hyphae 1.5–2.5 μm in diameter; basidiospores 4–5 × 3.5–4.5 μm ....................................................... X. ailaoshanensis

8. Generative hyphae 2.5–6 μm in diameter; basidiospores 3.3–4.4 × 2.8–4 μm ............................................................... X. gossypina